Fixes to the String type. Handling of generic members for boxing. Improvements in some of the tests.
Fixes to the String type.
Handling of generic members for boxing.
Improvements in some of the tests.

unratito/ceylon.language,lucaswerkmeister/ceylon.language,unratito/ceylon.language,jvasileff/ceylon.language,jvasileff/ceylon.language,ceylon/ceylon.language,ceylon/ceylon.language,lucaswerkmeister/ceylon.language